CN108218443A - A kind of intermediate frequency furnace wadding and its moulding process - Google Patents
A kind of intermediate frequency furnace wadding and its moulding process Download PDFInfo
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- CN108218443A CN108218443A CN201711396206.0A CN201711396206A CN108218443A CN 108218443 A CN108218443 A CN 108218443A CN 201711396206 A CN201711396206 A CN 201711396206A CN 108218443 A CN108218443 A CN 108218443A
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- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
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- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
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- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
- F27D2001/1605—Repairing linings
Abstract
The present invention relates to casting technology fields, and in particular to a kind of intermediate frequency furnace wadding and its moulding process, the intermediate frequency furnace are made of with wadding wadding composition, and on the basis of 100 parts by weight of quartz sand, the wadding composition includes：100 parts by weight of quartz sand, 20~35 parts by weight of zirconium English powder, 12~30 parts by weight of heat-resistant filler, 2~8 parts by weight of additive；It is 1 in mass ratio that the heat-resistant filler, which includes the fine grained that the coarse granule that granularity is 2~6mm, the middle particle that granularity is 0.5~2mm, granularity are 0.1~0.5mm,：(0.8~1.2)：(2~2.5) compound；Varigrained heat-resistant filler provided by the invention fills to form gusset formations, the compactness of wadding is improved, with reference to the moulding process of wadding, improves the sintering character of wadding, improve the structural strength of wadding, it is ensured that intermediate frequency furnace is safe and reliable in fusion process.
Description
Technical field
The present invention relates to casting technology fields, and in particular to a kind of intermediate frequency furnace wadding and its moulding process.
Background technology
Casting is ratio a kind of metal heat processing technique earlier that the mankind grasp, and China is about B.C. 1700~preceding 1000
The period of full bloom of bronze casting is had been enter between year, has reached quite high level in technique.Casting is that liquid metals is cast
Into the casting cavity being adapted with part shape, after its cooled and solidified, to obtain the method for part or blank.It was casting
Cheng Zhong, smelt stage is the most key, is the key that ensure that metal material fully liquefies and can fully realize that blending obtains alloy,
What the step typically carried out in a furnace, it, must for the inner wall of smelting furnace in practical operation due to feature of smelting furnace itself
Corresponding furnace lining matching must be set to use, but furnace lining material of the prior art, since raw material is chosen not enough clearly rationally, lead
The actual performance for causing furnace lining is poor, can not meet hard, the wear-resisting and high temperature resistance of furnace lining, and the practical molding of furnace lining
When, also there is very big operation lack of standard, directly result in the limitation of smelting furnace melting, influence the quality of successive castings.
Invention content
For the problems of the prior art, the purpose of the present invention is to provide a kind of wadding and its moulding process, in being used for
In frequency induction furnace, the structural strength of melting wadding is improved, it is ensured that safe and reliable in fusion process.
To achieve these goals, the present invention is achieved by the following scheme：A kind of intermediate frequency furnace wadding,
It is made of wadding composition, on the basis of 100 parts by weight of quartz sand, the wadding composition includes：100 weight of quartz sand
Part, 20~35 parts by weight of zirconium English powder, 12~30 parts by weight of heat-resistant filler, 2~8 parts by weight of additive；
The heat-resistant filler includes the coarse granule that granularity is 2~6mm, the middle particle that granularity is 0.5~2mm, granularity
The fine grained of 0.1~0.5mm is 1 in mass ratio：(0.8~1.2)：(2~2.5) compound.
The present invention is small by the porosity of granularity difference and the rational heat-resistant filler wadding of proportioning, and compactness is high, burns
Knot property is good.Coarse grained heat-resistant filler primarily serves the effect of skeleton, and middle particle increases heap for being filled between coarse granule
Product density, improves sintering character, improves intensity, and fine grain heat-resistant filler ensures the sintering character of wadding, is sintered network
Continuity so that wadding has good compactness.
Further, on the basis of 100 parts by weight of quartz sand, the wadding composition includes：100 weight of quartz sand
Part, 25~30 parts by weight of zirconium English powder, 15~25 parts by weight of heat-resistant filler, 3~5 parts by weight of additive.
In the present invention, zirconium English powder is as one of wadding composition, the advantages of combining its high-wearing feature and surface smoothness,
The zirconium English powder is by ZrO272~85%, SiO214~27%, TiO20.1~0.4%, Fe2O30.1~0.5%,
Al2O30.1~0.3% compounds, and above-mentioned percentage composition is mass percent.
Heat-resistant filler of the present invention is selected from titanium dioxide, aluminium nitride, silicon carbide, zinc oxide, iron oxide and cerium oxide.
Further, according to the present invention, the effect of additive is to improve the sintering character of refractory material, reduces sintering temperature
Degree improves the quality of sintering；The one kind of the additive in boric acid, brine magnesium chloride, waterglass.
The present invention also provides a kind of moulding process of above-mentioned intermediate frequency furnace wadding, include the following steps：
(1) prepare furnace lining knotting apparatus, prepare stamp mass, i.e. wadding composition；
(2) prepare crucible mold；The making of crucible mold will consider preferable geometry and outer cover intensity, and shell makes every effort to smooth
Without rusty stain, the gradient of crucible mold is 1:10, with the difference of the capacity of smelting furnace, crucible mold thickness is generally 4~12mm, in order to
Ensure the compactness that brickwork pounds, the crucible mold of the smelting furnace of large capacity can be divided into multistage and be built, for the ease of baker
When furnace lining internal gas and steam discharge it is unimpeded, air hole is uniformly provided with around crucible mold；
(3) insulation filler is laid between sidewall of crucible and induction coil；The effect of insulation filler is to be tightly attached to sensing
The effect of insulation is played on circle, which may be used such as mica paper, asbestos board or glass wool cloth.
(4) one layer of stamp mass is laid with, thickness is 80~100mm, is beaten in fact with hammer flattener, and every layer is 30~50mm later, until
It roots out to keep furnace hearth level during furnace bottom, charging when should disperse to pave, it is impossible in heaps and hard vertical during ramming
Bottom is inserted into, but should avoid penetrating insulation filler to next；
In the case of preferred, in the step (4), every layer of edge rear center of tamping elder generation, until having counter frustrate during tamping
Subject to power, the knotting time of first layer is 60min, and every layer of knotting time is 30~40min later.
(5) crucible mold is placed, crucible mold center is made strictly to be fixed on the central axis of inductor coil；
(6) fire door and converter nose are built；Using waterglass as adhesive, mix and mix and pinch with suitable boric acid water and stamp mass
Synthesis type；
(7) baker and sintering are carried out after knotting.
Above-mentioned baker and the conventional technical means for being sintered to one of ordinary skill in the art's use, the present invention do not do superfluous herein
It states.
Compared with prior art, the present invention has following technique effect：
Varigrained heat-resistant filler provided by the invention fills to form gusset formations, improves the compactness of wadding, knot
The moulding process of wadding is closed, improves the sintering character of wadding, improves the structural strength of wadding, it is ensured that intermediate frequency furnace exists
It is safe and reliable in fusion process.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is furture elucidated.
Embodiment 1
A kind of intermediate frequency furnace wadding, is made of wadding composition, described on the basis of 100 parts by weight of quartz sand
Wadding composition includes：100 parts by weight of quartz sand, 28 parts by weight of zirconium English powder, 20 parts by weight of heat-resistant filler, 4 parts by weight of boric acid；
The heat-resistant filler includes：The silicon carbide that 5 parts by weight of aluminium nitride coarse granule that granularity is 5mm, granularity are 1.2mm
Middle 5 parts by weight of particle, 10 parts by weight of zinc oxide fine particles that granularity is 0.3mm；
The zirconium English powder is by ZrO280%th, SiO220%th, TiO20.3%th, Fe2O30.3%th, Al2O30.2% is multiple
With into above-mentioned percentage composition is mass percent.
The moulding process of above-mentioned intermediate frequency furnace wadding, includes the following steps：
(1) prepare furnace lining knotting apparatus, prepare stamp mass, i.e. wadding composition；
(2) prepare crucible mold；The smooth no rusty stain of shell of crucible mold, is uniformly provided with air hole around crucible mold；
(3) mica paper is laid between sidewall of crucible and induction coil；
(4) one layer of stamp mass is laid with, thickness 90mm is beaten in fact with hammer flattener, and every layer is 40mm later, until being rooted out during furnace bottom
To keep furnace hearth level, charging when, should disperse to pave, it is impossible to and it is in heaps, and one be inserted into vertically downward firmly during ramming
Bottom, but should avoid penetrating insulation filler；Every layer of edge rear center of tamping elder generation, until have subject to the anti-power of frustrating during tamping,
The knotting time of first layer is 60min, and every layer of knotting time is 33min later.
(5) crucible mold is placed, crucible mold center is made strictly to be fixed on the central axis of inductor coil；
(6) fire door and converter nose are built；Using waterglass as adhesive, mix and mix and pinch with suitable boric acid water and stamp mass
Synthesis type；
(7) baker and sintering are carried out after knotting.
Embodiment 2
A kind of intermediate frequency furnace wadding, is made of wadding composition, described on the basis of 100 parts by weight of quartz sand
Wadding composition includes：100 parts by weight of quartz sand, 25 parts by weight of zirconium English powder, 15 parts by weight of heat-resistant filler, 3 weight of brine magnesium chloride
Measure part；
The heat-resistant filler includes：The carbon that 3.75 parts by weight of aluminium nitride coarse granule that granularity is 4mm, granularity are 0.8mm
3.75 parts by weight of particle, 7.5 parts by weight of zinc oxide fine particles that granularity is 0.2mm in SiClx；
The zirconium English powder is by ZrO278%th, SiO218%th, TiO20.2%th, Fe2O30.2%th, Al2O30.1% is multiple
With into above-mentioned percentage composition is mass percent.
The moulding process of above-mentioned intermediate frequency furnace wadding, includes the following steps：
(1) prepare furnace lining knotting apparatus, prepare stamp mass, i.e. wadding composition；
(2) prepare crucible mold；The smooth no rusty stain of shell of crucible mold, is uniformly provided with air hole around crucible mold；
(3) asbestos board is laid between sidewall of crucible and induction coil；
(4) one layer of stamp mass is laid with, thickness 85mm is beaten in fact with hammer flattener, and every layer is 35mm later, until being rooted out during furnace bottom
To keep furnace hearth level, charging when, should disperse to pave, it is impossible to and it is in heaps, and one be inserted into vertically downward firmly during ramming
Bottom, but should avoid penetrating insulation filler；Every layer of edge rear center of tamping elder generation, until have subject to the anti-power of frustrating during tamping,
The knotting time of first layer is 60min, and every layer of knotting time is 30min later.
(5) crucible mold is placed, crucible mold center is made strictly to be fixed on the central axis of inductor coil；
(6) fire door and converter nose are built；Using waterglass as adhesive, mix and mix and pinch with suitable boric acid water and stamp mass
Synthesis type；
(7) baker and sintering are carried out after knotting.
Embodiment 3
A kind of intermediate frequency furnace wadding, is made of wadding composition, described on the basis of 100 parts by weight of quartz sand
Wadding composition includes：100 parts by weight of quartz sand, 30 parts by weight of zirconium English powder, 25 parts by weight of heat-resistant filler, 5 parts by weight of waterglass；
The heat-resistant filler includes：The carbon that 6.25 parts by weight of aluminium nitride coarse granule that granularity is 5mm, granularity are 1.8mm
6.25 parts by weight of particle, 12.5 parts by weight of zinc oxide fine particles that granularity is 0.3mm in SiClx；
The zirconium English powder is by ZrO282%th, SiO225%th, TiO20.3%th, Fe2O30.3%th, Al2O30.2% is multiple
With into above-mentioned percentage composition is mass percent.
The moulding process of above-mentioned intermediate frequency furnace wadding, includes the following steps：
(1) prepare furnace lining knotting apparatus, prepare stamp mass, i.e. wadding composition；
(2) prepare crucible mold；The smooth no rusty stain of shell of crucible mold, is uniformly provided with air hole around crucible mold；
(3) such as mica paper is laid between sidewall of crucible and induction coil；
(4) one layer of stamp mass is laid with, thickness 100mm is beaten in fact with hammer flattener, and every layer is 50mm later, until being shoveled during furnace bottom
Divided by furnace hearth level is kept, and charging when, should disperse to pave, it is impossible to and it is in heaps, and hard during ramming one insert vertically downward
On earth, it but should avoid penetrating insulation filler；Every layer of edge rear center of tamping elder generation, until when tamping there is the anti-power of frustrating to be
Standard, the knotting time of first layer is 60min, and every layer of knotting time is 40min later.
(5) crucible mold is placed, crucible mold center is made strictly to be fixed on the central axis of inductor coil；
(6) fire door and converter nose are built；Using waterglass as adhesive, mix and mix and pinch with suitable boric acid water and stamp mass
Synthesis type；
(7) baker and sintering are carried out after knotting.
Embodiment 4
A kind of intermediate frequency furnace wadding, is made of wadding composition, described on the basis of 100 parts by weight of quartz sand
Wadding composition includes：100 parts by weight of quartz sand, 20 parts by weight of zirconium English powder, 12 parts by weight of heat-resistant filler, 2 parts by weight of boric acid；
The heat-resistant filler includes：The nitrogen that 3.16 parts by weight of carborundum coarse particle that granularity is 2mm, granularity are 0.5mm
Change 2.52 parts by weight of particle in aluminium, 6.32 parts by weight of iron oxide fine grained that granularity is 0.1mm；
The zirconium English powder is by ZrO272%th, SiO214%th, TiO20.1%th, Fe2O30.1%th, Al2O30.1% is multiple
With into above-mentioned percentage composition is mass percent.
The moulding process of above-mentioned intermediate frequency furnace wadding, includes the following steps：
(1) prepare furnace lining knotting apparatus, prepare stamp mass, i.e. wadding composition；
(2) prepare crucible mold；The smooth no rusty stain of shell of crucible mold, is uniformly provided with air hole around crucible mold；
(3) mica paper is laid between sidewall of crucible and induction coil；
(4) one layer of stamp mass is laid with, thickness 80mm is beaten in fact with hammer flattener, and every layer is 30mm later, until being rooted out during furnace bottom
To keep furnace hearth level, charging when, should disperse to pave, it is impossible to and it is in heaps, and one be inserted into vertically downward firmly during ramming
Bottom, but should avoid penetrating insulation filler；Every layer of edge rear center of tamping elder generation, until have subject to the anti-power of frustrating during tamping,
The knotting time of first layer is 60min, and every layer of knotting time is 30min later.
(5) crucible mold is placed, crucible mold center is made strictly to be fixed on the central axis of inductor coil；
(6) fire door and converter nose are built；Using waterglass as adhesive, mix and mix and pinch with suitable boric acid water and stamp mass
Synthesis type；
(7) baker and sintering are carried out after knotting.
Embodiment 5
A kind of intermediate frequency furnace wadding, is made of wadding composition, described on the basis of 100 parts by weight of quartz sand
Wadding composition includes：100 parts by weight of quartz sand, 35 parts by weight of zirconium English powder, 30 parts by weight of heat-resistant filler, 8 parts by weight of boric acid；
The heat-resistant filler includes：The nitridation that 6.38 parts by weight of carborundum coarse particle that granularity is 6mm, granularity are 2mm
7.66 parts by weight of particle, 15.96 parts by weight of iron oxide fine grained that granularity is 0.5mm in aluminium；
The zirconium English powder is by ZrO285%th, SiO227%th, TiO20.4%th, Fe2O30.5%th, Al2O30.3% is multiple
With into above-mentioned percentage composition is mass percent.
The moulding process of above-mentioned intermediate frequency furnace wadding, includes the following steps：
(1) prepare furnace lining knotting apparatus, prepare stamp mass, i.e. wadding composition；
(2) prepare crucible mold；The smooth no rusty stain of shell of crucible mold, is uniformly provided with air hole around crucible mold；
(3) glass wool cloth is laid between sidewall of crucible and induction coil；
(4) one layer of stamp mass is laid with, thickness 100mm is beaten in fact with hammer flattener, and every layer is 50mm later, until being shoveled during furnace bottom
Divided by furnace hearth level is kept, and charging when, should disperse to pave, it is impossible to and it is in heaps, and hard during ramming one insert vertically downward
On earth, it but should avoid penetrating insulation filler；Every layer of edge rear center of tamping elder generation, until when tamping there is the anti-power of frustrating to be
Standard, the knotting time of first layer is 60min, and every layer of knotting time is 40min later.
(5) crucible mold is placed, crucible mold center is made strictly to be fixed on the central axis of inductor coil；
(6) fire door and converter nose are built；Using waterglass as adhesive, mix and mix and pinch with suitable boric acid water and stamp mass
Synthesis type；
(7) baker and sintering are carried out after knotting.
Intermediate frequency furnace wadding provided by the invention, by the compatibility of thick fine-grained heat-resistant filler, with reference to being knotted into
Type technique, the wadding compactness of formation is high, and intensity is high, it is ensured that intermediate frequency furnace in use safe and reliable.
Basic principle, main feature and the features of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement is both fallen in the range of claimed invention.The scope of protection of present invention is by appended claims
And its equivalent thereof.
Claims (7)
1. a kind of intermediate frequency furnace wadding, it is characterised in that：It is made of wadding composition, using 100 parts by weight of quartz sand as base
Standard, the wadding composition include：100 parts by weight of quartz sand, 20~35 parts by weight of zirconium English powder, 12~30 weight of heat-resistant filler
Part, 2~8 parts by weight of additive；
The heat-resistant filler include the coarse granule that granularity is 2~6mm, the middle particle that granularity is 0.5~2mm, granularity be 0.1~
The fine grained of 0.5mm is 1 in mass ratio：(0.8~1.2)：(2~2.5) compound.
2. intermediate frequency furnace wadding according to claim 1, it is characterised in that：On the basis of 100 parts by weight of quartz sand,
The wadding composition includes：100 parts by weight of quartz sand, 25~30 parts by weight of zirconium English powder, 15~25 parts by weight of heat-resistant filler,
3~5 parts by weight of additive.
3. intermediate frequency furnace wadding according to claim 1, it is characterised in that：The zirconium English powder is by ZrO272~
85%th, SiO214~27%, TiO20.1~0.4%, Fe2O30.1~0.5%, Al2O30.1~0.3% compounds, on
Percentage composition is stated as mass percent.
4. intermediate frequency furnace wadding according to claim 1, it is characterised in that：The heat-resistant filler is selected from titanium dioxide
Titanium, aluminium nitride, silicon carbide, zinc oxide, iron oxide and cerium oxide.
5. intermediate frequency furnace wadding according to claim 1, it is characterised in that：The additive is selected from boric acid, halogen
One kind in aqueous magnesium chloride, waterglass.
6. a kind of moulding process of intermediate frequency furnace wadding as claimed in any one of claims 1 to 5, wherein, it is characterised in that：
Include the following steps：
(1) prepare furnace lining knotting apparatus, prepare stamp mass；
(2) prepare crucible mold；
(3) insulation filler is laid between sidewall of crucible and induction coil；
(4) one layer of stamp mass is laid with, thickness is 80~100mm, is beaten in fact with hammer flattener, every layer is 30~50mm later, until furnace bottom
When root out to keep furnace hearth level；
(5) crucible mold is placed, crucible mold center is made strictly to be fixed on the central axis of inductor coil；
(6) fire door and converter nose are built；
(7) baker and sintering are carried out after knotting.
7. the moulding process of intermediate frequency furnace wadding according to claim 6, it is characterised in that：The step (4)
In, every layer of edge rear center of tamping elder generation, until having subject to the anti-power of frustrating during tamping, the knotting time of first layer is 60min, after
Every layer of knotting time is 30~40min.
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| CN110054435A (en) * | 2019-05-05 | 2019-07-26 | 安徽龙泉硅材料有限公司 | A kind of sodium metasilicate processing production method of smelting furnace furnace body wadding |
| CN114988897A (en) * | 2022-06-30 | 2022-09-02 | 包头钢铁（集团）有限责任公司 | Furnace lining material for medium-frequency vacuum induction furnace and preparation method and application thereof |
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